Stay-bolt structure.



J. R. FLANNERY & E. I. DODDS.

STAY sou STRUCTURE.

APPLICATION FILED MAY 3. 1918.

1,298,131 9. Patented Mar. 25

uuuiwmm um 2% 1 [A KEN/x9123 TTE sTATEs PATENT onnrcs:

JOHN ROGERS FLANNERY AND ETHAN I. DODD-S, OF PITTSBURGH, PENNSYLVANIA,-

ASSIGNORS TO FLANNERY BOLT COMPANY, OF PITTSBURGH, PENNSYLVANIA.

STAY-BOLT STRUCTURE.

To all whom it may concern:

Be it known that we, J OI-IN Rooms FLAN- NERY and ETHAN I. Donns, citizens of the United States, and residents of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Stay Bolt Structures; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in staybolt structures for boilers and more particularly to means for closing the outer end of the bearing sleeve,the object of the invention being to so connect a cap or closure with a bearing sleeve that it can be quickly removed to permit access to the bolt head for testing purposes, so that it may be as "quickly replaced, and so that normally, the

cap or closure shall be held tightly to its seat. I

With this and other objects in view, the

invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claims r In the accompanying drawings; Figure 1 is a sectional view of a stayboltstrueture showing an embodiment of our invention; Fig. 2 is a side elevation; Fig. 3 is a transverse section of head on the line 33 of Fig. 1; Fig. 4 is a plan view of the bearing sleeve; Fig. 5 is a side elevation of the bearing sleeve; Figs. 6 and 7 are separate views of the cap or closure, and Fig. 8 is a view of a modification.

1 represents a bearing sleeve having a curved interior surface 2 forming a bearing for the head 3 of a staybolt 4,said sleeve being threaded exteriorly the screw through a boiler sheet, and at its outer end, the bearing sleeve is made with a portion 5 which extends somewhat beyond the threaded portion of the sleeve. The portion 5 of the bearing sleeve is made with laterally projecting segmental shoulders 6 and from each of these, a segmental flange 7 projects outwardly.

In the construction shown in Fig. 1, a cap 10 is seated on the end of the bearing sleeve within the confines of the segmental flanges 7. This cap may have a general hemispheri- Specification of Letters Patent. Patented M 25 1919 Application filed May 3, 1918.

Serial No. 232,295.

cal shape with its internal dimensions and configuration such as will provide suitable clearance for the head of the staybolt.

The cap or closure 10 is provided with laterally projecting beveled flanges or cams 11 for a purpose hereinafter explained. In the drawings, we have illustrated two such cam flanges located diametrically opposite to each other.

An annular nipple 12- projects from the central portion ofthe cap or closure 10 and is made to flare somewhat and enter loosely into an annular flaring groove 13 in the central portion of a dome-shaped head or carrier Di -whereby the cap and carrier are loosely connectedtogether so that the cap may have sufficient movement to the carrier (a clearance space 15 being provided between them) to permit said cap to compensate for slight inequalities in its bearing face or its seat.

The-head or carrier 14: incloses the cap 10 and is made with a peripheral portion 16 (having an angular or hexagonal outer face for the accommodation of the wrench),

The head or carrier lt-is pr0videdinteriorly with segmental beveled shoulders 18, between which. and the shoulders 6 on the bearing sleeve, the beveled flanges or cams 11 on the cap will be disposed when theparts are in their normal positions, and the said cam flanges 11 will be disposed in the spaces formed between the flanges 7 to prevent the cap 10 from turning. It will be observed that there is a slight clearance space 19 between the cam flanges 11 of the cap and the shoulder 6 on the bearing sleeve.

The assembled cap 10 and head or carrier 14 will be placed on the extended end of the bearing sleeve and the head or carrier 14.- will then be turned with the use of a suitable wrench. The head or carrier will turn relatively to the cap and the segmental shoulders therein 17 will become disposed behind the segmental shoulders 6 on the bearing sleeve. At the same time, the coiiperation of the shoulders 18 in the head with the cams 11 on the cap will serve to press the latter tightly upon its seat and cause the V shoulders 17ft-o bind against the shoulders.

6, and thus the cap or closure Will be firmlyin place; p 1

By. turning the head or'fcarrier in" the re on the bearing sleeve. 7

Instead v01Emaking' t'he portion 5 as an integral part ,of the sleeve, it may befmade as aseparate; oollarfi threaded internally to screw on vthesleeve asshoWn in Fig. 8,-

said collar having the segmental shoulders 6 and fiang es/(land also having fan inwardly projectingiannular fiange 9 overlying the lwe ;claim as neW; and: desire to securezby' endof heb e inets Sa fi nse s r i as a cap seat. l .c p Having fully descr bed ouriinventmn What Letters-Patent, 1s 1 r the same.

I with -a bearing sleeve having segmentalshoulders,- andacap or. closure having lat v erally projeetingcams, of ahead VOI CaIIJBIT I 1. Ina stayboltstructure, the combination witha bearing sleeve, of ahead, means removably connecting said head iththe bearging sleeve, a cap or closure forthebearing sleeve Jinclosed ithin said head, lateral cams on said cap or I closure, and shoulders ithin. the, headto be; disposed over the lateral cams f the c p 0 cl sure, n wbpemb i 2.: In a staybolt structure, the. combination m. hich said v cap or closure is disposed, said head having segmental shoulders to engage the segmental shoulders th b ari sleeve, and Said head being shouldered internally "to cooperatewiththe laterally pro fj eating, cams on the cap; a

r I 3. In a staybolt structure, theoombination 7 Copies of thi s patentmay lie obtaine du for five cents each, .bma

, Washington, D. 533?:

with bearingsleeve having segmental flanges, and a cap to seat on the bearing sleeve and having laterally projecting cams,

ofa head or carrier 'inclosingisaid cap-and :having segmental shoulders to 'iigage the segmental shoulders on the bearing sleeve,

'saidhead'having segmental shoulders there- 56 in' to cooperate With the cams on the ;,cap and means loosely connecting the caplvv-ith the .central portion; of the carrier.

4. In a staybolt structure,thecombination I With a bearing sleeve havinglgvlateral seg mental shoulders and T segmental ,flangtespn said shoulders, and a cap or closure haY-ing lateral cams to enter between said segmental, flanges, of'aheadinolosingsaidcap or clo- 1 sure and having segmental shouldersto; engage the shoulders on the bear ngsleeve,

said head liaving segmental shoulders adapted to cooperate with the lateral cams onfihe.

cap or closure.

' 5. In 'astaybolt st-rueture, the combinatien W1th a bearingsleeve, of a head or carrien means effecting a removable 'connectionof saidhead orcarrier With the bearing sleeve,

Said h ed; r lyi g' an nn lar i flare-s s ro v n al y oca ed h rei m p:

or olosure inolosed Within said, head and having an annulan pro ect1on ,loofsely entere mg, the flar ng groove in said head or ear rier, lateral cams on the cap enclosure, and; segmental shoulders 1nthehead or carrier togcooperate With said-last-mentioned seg;, 7

mental shoulders.

In testimony whereof, We have signed this 7 V V specification in thepresence oftwo subscribf 1 ing witnessesa a p v JOHN'ROGERS FLANNERY, ETHANI. DQDDS. V V

Witnesses V S. G. NOTTINGHAM R. S. VFERGUISQN.

ddressi ng! the' f Commissioner 'or gatents, 

